Multiple choice

To which part of the spore structure calcium dipicolinate is associated?

  1. Cortex

  2. Spore coat

  3. Exosporium

  4. Core

  5. Spore cell wall

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Up to 20% of the dry weight of the endospore consists of calcium dipicolinate within the core which is thought to stabilize the DNA. Dipicolinic acid could be responsible for the heat resistance of the spore and calcium may aid in resistance to heat and oxidizing agents.